obligación
/obliɡaˈθjon/ · B1 · noun · f
duty
📜🤝 Cognate: obligación = obligation (Latin obligare, to bind)
From Latin ob- (towards) + ligare (to tie), the same root as ligament and the English obligation. An obligación is something that binds you to a duty. The -ción ending matches English -tion, so the word is nearly identical.